Angle-Resolved Spectroscopy of Electron-Electron Scattering in a 2D System
arXiv:cond-mat/0009005 · doi:10.1209/epl/i2001-00578-y
Abstract
Electron-beam propagation experiments have been used to determine the energy and angle dependence of electron-electron (ee) scattering a two-dimensional electron gas (2DEG) in a very direct manner by a new spectroscopy method. The experimental results are in good agreement with recent theories and provide direct evidence for the differences between ee-scattering in a 2DEG as compared with 3D systems. Most conspicuous is the increased importance of small-angle scattering in a 2D system, resulting in a reduced (but energy-dependent) broadening of the electron beam.
4 pages, 4 figures